论文标题
尘埃晶粒的静电lofting从表面和混合层的表面
Electrostatic lofting of dust grains from the surfaces of Thebe and Amalthea
论文作者
论文摘要
内部辐射带的能量电子可为木星卫星的表面带来明显的电动充电，它们的轨道位于该辐射带内。从理论上讲，我们估计了贝和汞的极性区域附近的电场，并认为这些磁场足以使微米和亚微米尺寸的尘埃晶粒从卫星表面倾斜。因此，除了通过微型度假射击对卫星表面的粉尘射击外，电场中电荷粉尘粒的倾斜可以被视为为散布环提供灰尘的额外来源。建议的机制可以在定性上解释散布环内的灰尘分布的某些特殊性。
Energetic electrons from the inner radiation belt provide significant electric charging of the surfaces of Jupiter's moons Thebe and Amalthea whose orbits are located within this radiation belt. We estimate theoretically the electric fields in the vicinity of the polar regions of Thebe and Amalthea and argue that these fields are sufficient for lofting of micron and submicron-sized dust grains from the surfaces of the moons. Thus, the lofting of charged dust grains in the electric fields can be considered as an additional source supplying dust to the gossamer rings in addition to dust ejection by micrometeoroid impacts onto the moons' surfaces. The suggested mechanism can explain qualitatively some peculiarities of the dust grain distributions within the gossamer rings.
